Episinus tongyani Lin & Li, 2021

Lin, Yejie, Marusik, Yuri M., Gao, Caixia, Xu, Hao, Zhang, Xiaoqing, Wang, Ziyi, Zhu, Wenhui & Li, Shuqiang, 2021, Twenty-three new spider species (Arachnida: Araneae) from Asia, Zoological Systematics 46 (2), pp. 91-152 : 144-145

Episinus tongyani Lin & Li , sp. nov. ( Figs 44A–C , 45A–B , 46A–D, 53E–F )

Diagnosis. The new species is similar to E. nubilus Yaginuma, 1960 , but it can be distinguished by the Sp, which is straight in ventral view; the C surrounds the tip of the E and is hooked distally.

Description. Male (holotype, IZCAS-Ar42461, Figs 44A–C , 46C–D, 53E ). Total length 2.50. Prosoma 0.81 long, 0.73 wide, flat, pale yellow, anterior part of ocular area with two distinct processes. Sternum 0.53 long, 0.44 wide, pale yellow. Opisthosoma 1.28 long, 1.38 wide, pale yellow with large white spots in dorsal view. Eyes developed: AME 0.13, ALE 0.08, PME 0.09, PLE 0.08, AME–AME 0.08, AME–ALE 0.05, PME–PME 0.05, PME–PLE 0.03. Clypeus height about same size as AME diameter. Leg I femur 2.00, patella 0.40, tibia 1.75, metatarsus 2.13, tarsus 0.75. Patella and tibia II–IV: 1.65, 0.65, 1.30. Legs yellow to black, femur and tibia with a line of dorsal bristles; metatarsus with a line of bristles in dorsal and ventral view.

Palp ( Figs 44A–C , 46C–D) tibia long; Sp straight in ventral view; E long, slender; C large, surrounding the end of E.

Female (paratype, IZCAS-Ar42465, 45A–B, 46A–B, 53F). Total length 3.00–3.50. Prosoma 1.00–1.13 long, 1.00–1.05 wide, flat, pale yellow, anterior part of ocular area with two distinct processes. Sternum 0.63–0.68 long, 0.55–0.62 wide, pale yellow. Opisthosoma 1.88–2.00 long, 2.63–3.13 wide, yellow, with white spots. Eyes developed. Legs similar to those of male.

Epigynum ( Figs 45A–B , 46A–B) flat; S curved; CD long, winding, opening to the anterior margin of atrium; FDs short, falcate.

Material examined. Holotype ♂, China: Yunnan, Menglun Nature Reserve (21.9588°N, 101.2064°E; elev. ca. 899 m), 6 August 2007, leg. Yan Tong (IZCAS-Ar42461). Paratypes. 1♂ (IZCAS-Ar42462), same data as holotype ; 2♂ (IZCAS- Ar42463–Ar42464), 2♀ (IZCAS-Ar42465–Ar42466), same data as holotype .

Distribution. Known only from the type locality.

Etymology. The species is named after the collector Mr. Yan Tong and is a noun (name) in genitive case.

Variation. Male (paratypes; n =3). Total length 1.88–2.25; prosoma 0.81–0.83 long, 0.69–0.75 wide; sternum 0.55–0.63 long, 0.45–0.50 wide; opisthosoma 1.25–1.31 long, 1.40–1.60 wide.

Figures

Figure 44. Episinus tongyani Lin & Li, sp. nov., holotype male, left palp. A. Prolateral view; B. Ventral view; C. Retrolateral view. Scale bars=0.1mm.

Figure 45. Episinus tongyani Lin & Li, sp. nov., paratype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Scale bars = 0.1mm.

Figure 53. Habitus of six new Theridiidae species, male dorsal view (A–C, E, G–L), lateral view (H, J, L) and female dorsal view (B, D, F, H). A–B. Episinus bonjovi Lin & Li, sp. nov.; C–D, E. jiangweni Lin & Li, sp. nov.; E–F. E. tongyani Lin & Li, sp. nov.; G–H. Meotipa luoqiae Lin & Li, sp. nov.; I–J. M. menglun Lin & Li, sp. nov.; K–L. M. zhengguoi Lin & Li, sp. nov. Scale bars= 1.0mm.